the following formula (1) the compound represented by, growth promotion method of the plant to process plants However, following the appropriate compound or an agriculturally acceptable salt thereof to (1), growth-promoting method of the plant to be processed in the plant is excluded (1) benzo [b] thiophene-3-carboxylic acid method of plants according to any one of the soy. The method according to any one of the plant is cotton the formula (1) compound the effective amount comprises claims 1 seeds which compound is being processed as indicated by the formula (1) compounds and plant growth promoting composition comprising an inert ingredient represented by下記式(1)で示される化合物を、植物に処理する植物の生長促進方法。但し、以下の(1)に該当する化合物又はその農学的に許容される塩を、植物に処理する植物の生長促進方法は除く。(1)ベンゾ[b]チオフェン-3-カルボン酸植物がダイズである前記のいずれか一に記載の方法。植物がワタである前記のいずれか一に記載の方法。前記式(1)で示される化合物を有効量含む請求項1の化合物が処理されてなる植物種子。前記式(1)で示される化合物及び不活性成分を含有する植物生長促進組成物。
